Legendary culture hero said to have taught people to make fire by drilling wood, 钻木取火, so they could cook their food. He is counted among the 三皇, the Three Sovereigns of prehistory.
Suiren is one of the founding ancestors of Chinese civilisation.
Tips
culture
燧 is an old word for a fire-making tool, still heard in 燧石 'flint', so 燧人 is simply 'the fire-tool man'. Shangqiu in Henan keeps a legendary tomb for him, the 燧皇陵.
memory
燧 has the 火 (fire) radical on the left - built right into the fire-bringer's name.